Question

[Đbuoi]

Tìm X 

X:3\(\dfrac{1}{15}\)-\(\dfrac{3}{4}\)=2\(\dfrac{1}{4}\)

X nhân 3\(\dfrac{2}{3}\)-1\(\dfrac{2}{3}\)=2\(\dfrac{1}{3}\)

Answer 1

[Đbuoi]

giúp em với ạ

Answer 2

[Akai Haruma]

Lời giải:

a. 

$x:3\frac{1}{15}-\frac{3}{4}=2\frac{1}{4}$

$x:\frac{46}{15}-\frac{3}{4}=\frac{9}{4}$

$x: \frac{46}{15}=\frac{9}{4}+\frac{3}{4}=3$

$x=3\times \frac{46}{15}=\frac{46}{5}$

b. $x\times 3\frac{2}{3}-1\frac{2}{3}=2\frac{1}{3}$
$x\times \frac{11}{3}=1\frac{2}{3}+2\frac{1}{3}=4$

$x=4: \frac{11}{3}=\frac{12}{11}$